31 January 2017
Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2017.0268 Belden Hirschmann GECKO 31 January 2017 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Hirschmann GECKO Publisher: ICS-CERT Operating System: Network Appliance Impact/Access: Access Confidential Data -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2017-5163 Original Bulletin: https://ics-cert.us-cert.gov/advisories/ICSA-17-026-02 - --------------------------BEGIN INCLUDED TEXT-------------------- Advisory (ICSA-17-026-02) Belden Hirschmann GECKO Original release date: January 26, 2017 All information products included in http://ics-cert.us-cert.gov are provided "as is" for informational purposes only. The Department of Homeland Security (DHS) does not provide any warranties of any kind regarding any information contained within. DHS does not endorse any commercial product or service, referenced in this product or otherwise. Further dissemination of this product is governed by the Traffic Light Protocol (TLP) marking in the header. For more information about TLP, see http://www.us-cert.gov/tlp/. CVSS v3 5.9 ATTENTION: Remotely Exploitable/high skill level to exploit. Vendor: Belden Equipment: Hirschmann GECKO Vulnerability: Authentication Bypass Using an Alternate Path or Channel AFFECTED PRODUCTS The following GECKO switch versions are affected: Hirschmann GECKO Lite Managed switch, Version 2.0.00 and prior versions. IMPACT Successful exploitation of this vulnerability may allow a remote attacker to access a copy of the configuration file of an affected device without authenticating, exposing sensitive information. MITIGATION Belden has released a new software version, Version 02.0.01, to address the identified vulnerability, which is available at the following location: https://www.e-catalog.beldensolutions.com/link/57078-24455-402707-402708/en/conf/0 (link is external) Belden recommends that users update to the newest software version. As an interim compensating control, Belden specifies that users can reboot affected devices after each configuration download, preventing the vulnerable state. For additional information, please review Beldens security bulletin, BSECV-2016-5, which is available at the following location: https://www.belden.com/resourcecenter/security/upload/Belden-Security-Bulletin-BSECV-2016-5.pdf (link is external) NCCIC/ICS-CERT recommends that users take defensive measures to minimize the risk of exploitation of this vulnerability. Specifically, users should: Minimize network exposure for all control system devices and/or systems, and ensure that they are not accessible from the Internet. Locate control system networks and remote devices behind firewalls, and isolate them from the business network. When remote access is required, use secure methods, such as Virtual Private Networks (VPNs), recognizing that VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize that VPN is only as secure as the connected devices. ICS-CERT reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures. ICS-CERT also provides a section for control systems security recommended practices on the ICS-CERT web page. Several recommended practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies. Additional mitigation guidance and recommended practices are publicly available in the ICSCERT Technical Information Paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies, that is available for download from the ICS-CERT web site. Organizations observing any suspected malicious activity should follow their established internal procedures and report their findings to ICS-CERT for tracking and correlation against other incidents. No known public exploits specifically target this vulnerability. This vulnerability is remotely exploitable. High skill level is needed to exploit. VULNERABILITY OVERVIEW PATH TRAVERSAL CWE-22 After an administrator downloads a configuration file, a copy of the configuration file, which includes hashes of user passwords, is saved to a location that is accessible without authentication. CVE-2017-5163 has been assigned to this vulnerability. A CVSS v3 base score of 5.9 has been assigned; the CVSS vector string is (AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N). RESEARCHER Davy Douhine of RandoriSec identified this vulnerability. BACKGROUND Critical Infrastructure Sector(s): Multiple sectors Countries Deployed: Worldwide Company Headquarters Location: St. Louis, Missouri. - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to email@example.com and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: firstname.lastname@example.org Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQIVAwUBWI/dI4x+lLeg9Ub1AQj+bRAAoLKm9361u+hMV4MnXac1kQxR/3tvndgi M0gi81J9TLW+SELP0g0DBwkaN0CPf/HGNPJMDCycLW/IYb9QcctQlxJOam74+CfV gyA+3a2R7OjufNd8IXFZ9hzu0M5AMEQ0fMGLFtJqITK/P80DuseUzm9WBApwiJgx 3GMnWhSZCZyJdLnBukzohCCD+PVLCFn8+SUBMWUbWsOjveSmsYDrpCGlRy1trRXD ZYj3E3P/5+oU9+Uh5+DctoiVTwbEGX7ktD2iaqui+OEeIyS0d8Ll0w4Dt7x8ap/c nDNhKYBaXHDY85iz1Ot7ev9LaICJNHnOX3WUuxJmGjPJtxqQDC3IJPFVe7k7ji61 0gdlrUcQi4quQoaeAtGXPOs7wZd4WRfKemZt64B3h7aPZNd2fCfw5x2XvGze5XIU YcHdSpSwKFMgjM3xynV30wL2106vS9no3Dq2FHeWhmvE++Ed3XWLhmh6nbrW3ZqP RMj5j4JDFuzepviV5GH8Zm6PJla98aBOmHKueiEvG2LVK/HQgC/Mra01f0J58kX4 bEMJueyPrxPPj49wao3hBtUrfyUb18++ew/A3Iji5fh1AvtYTmO/6uK8TTwO4lfk J+N2mSe3S5EFG0s+XlXd5ciQs9cfUK3v2+P4GSzgdIOxUes83WzzYhGXnYUhXpQ/ XrsH6yIbNs0= =dJ8c -----END PGP SIGNATURE-----